321887-73-4Relevant academic research and scientific papers
Ligand-assisted rate acceleration in lanthanum
Hatano, Manabu,Furuya, Yoshiro,Shimmura, Takumi,Moriyama, Katsuhiko,Kamiya, Sho,Maki, Toshikatsu,Ishihara, Kazuaki
supporting information; experimental part, p. 426 - 429 (2011/04/15)
The transesterification of an equimolar mixture of carboxylic esters and primary (1°), secondary (2°), and tertiary (3°) alcohols in hydrocarbon solvents was promoted with high efficiency by a lanthanum(III) complex, which was prepared in situ from lanthanum (III) isopropoxide (1 mol %) and 2-(2-methoxyethoxy)ethanol (2 mol %). The present La(III) catalyst was highly effective for the chemoselective transesterification in the presence of competitive 1°-and 2°-amines. Remarkably, esters were obtained in good to excellent yields as colorless materials without an inconvenient workup procedure.
A novel and efficient method for the silylation of alcohols with methallylsilanes catalyzed by Sc(OTf)3
Suzuki,Watahiki,Oriyama
, p. 8903 - 8906 (2007/10/03)
Reaction of alcohols with methallylsilanes in the presence of a catalytic amount of Sc(OTf)3 provides efficiently the corresponding alkyl silyl ethers. By using microencapsulated (MC) Sc(OTf)3, which can be easily recovered and reused, yields of alkyl silyl ethers are improved and the work-up process after completion of the reaction is considerably simplified. (C) 2000 Elsevier Science Ltd.
